What is a double field?

There are two uses for the term "double field". The first shows that the field is made up of double scalar -type data elements, any number with a movable point. The second use describes a field that is two -dimensional (2D) or multidimensional. Multi -dimensional fields have more than one index in data memory location, which means that each element in the double field is actually the beginning of a different field. In object -oriented languages, a double field can also indicate a field that contains double -class elements, instead of a type of scalar type.

Not all computer programming languages ​​have a data type known as double. In general, however, it is a representation of the number with movement with movement, which occupies twice or double the amount of space that occupies a single exact number. These numbers may have remarkably high values ​​that are usually expressed by exponents. Most computer hardware use 64 bits to represent double, which means that double fields occupy 8 bytes in memory for kaŽDý element, although some hardware uses 128 bits or more for double data type.

Many object -oriented programming languages ​​have packaging classes for scalar data types, allowing them to treat them as any other class or object. Instead, the double field may contain these objects, in which case the field will function as an field of intermed classes. This can sometimes be useful for some network situations in which serialization is a problem or in multiple applications where synchronization is important.

When linking to a multi -dimensional double field, the double field usually indicates a field that has two sets of index. The one -dimensional field is simply a list of similar data types that are all aligned in the computer memory, while the location of each separate data cell is numbered gradually up from zero. The number that the data location in the field is called its index and data in the SE IndexThey call a data element or a fair element.

The double field is essentially a one -dimensional field in which each index is actually the first index of a different one -dimensional field. One way to visualize a double field is a grid or a piece of graphic paper. The first field index would refer to which column in the grid refers to, while the second index would indicate what order in this column is access.